We report on the optical trapping of water droplets with a supercontinuum laser source. Droplet size is determined by observing the spectrum of the on-axis backscattered light. In contrast to to monochromatic trapping, the broad spectrum of the supercontinuum covers several resonances of the first excited Mie coefficients. A minimum value of Q ∼ 0.16 for the trapping efficiency is estimated.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics